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Astronomy Picture of the Day -- A Dangerous Sunrise on Gliese 876d
NASA ^ | April 29, 2012 | (see photo credit)

Posted on 04/29/2012 4:55:30 AM PDT by SunkenCiv

Explanation: On planet Gliese 876d, sunrises might be dangerous. Although nobody really knows what conditions are like on this close-in planet orbiting variable red dwarf star Gliese 876, the above artistic illustration gives one impression. With an orbit well inside Mercury and a mass several times that of Earth, Gliese 876d might rotate so slowly that dramatic differences exist between night and day. Gliese 876d is imagined above showing significant volcanism, possibly caused by gravitational tides flexing and internally heating the planet, and possibly more volatile during the day. The rising red dwarf star shows expected stellar magnetic activity which includes dramatic and violent prominences. In the sky above, a hypothetical moon has its thin atmosphere blown away by the red dwarf's stellar wind. Gliese 876d excites the imagination partly because it is one of the few extrasolar planets known to be in or near to the habitable zone of its parent star.

April 29, 2012

(Excerpt) Read more at 129.164.179.22 ...


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; astronomy; gliese876d; science; xplanets
[Illustration Credit & Copyright: Inga Nielsen (Hamburg Obs., Gate to Nowhere)]

1 posted on 04/29/2012 4:55:34 AM PDT by SunkenCiv
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To: KevinDavis; annie laurie; Knitting A Conundrum; Viking2002; Ernest_at_the_Beach; Mmogamer; ...
 
X-Planets
· join · view topics · view or post blog · bookmark · post new topic · subscribe ·
Google news searches: exoplanet · exosolar · extrasolar ·

2 posted on 04/29/2012 4:56:42 AM PDT by SunkenCiv (FReepathon 2Q time -- https://secure.freerepublic.com/donate/)
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To: brytlea; cripplecreek; decimon; bigheadfred; KoRn; Grammy; married21; steelyourfaith; Mmogamer; ...

Artist's conception.


3 posted on 04/29/2012 4:58:18 AM PDT by SunkenCiv (FReepathon 2Q time -- https://secure.freerepublic.com/donate/)
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To: SunkenCiv
Shades of Crematoria!


4 posted on 04/29/2012 5:08:44 AM PDT by shibumi (Cover it with gas and set it on fire.)
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To: SunkenCiv

This doesn’t really look like its in the habitable zone.


5 posted on 04/29/2012 5:16:16 AM PDT by samtheman ( http://www.youtube.com/watch?v=CZ-4gnNz0vc)
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To: SunkenCiv

Reminds me of my last barbecue.


6 posted on 04/29/2012 5:17:38 AM PDT by blueunicorn6 ("A crack shot and a good dancer")
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To: blueunicorn6

They say chickens can’t fly, but if you get enough propane behind them.......


7 posted on 04/29/2012 5:19:04 AM PDT by blueunicorn6 ("A crack shot and a good dancer")
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To: SunkenCiv

Whoa! Thanks for posting, ‘Civ.

Fascinating illustration by Inga and links that lead to constellation Aquarius, red dwarf star, light year, parsec, etc., etc.

Astronomy/Physics/Education BUMP!


8 posted on 04/29/2012 5:37:18 AM PDT by PGalt
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To: PGalt

Algore would have a field day here!


9 posted on 04/29/2012 5:44:03 AM PDT by greenhornet68
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To: SunkenCiv

East LA after a George Zimmerman acquittal.


10 posted on 04/29/2012 5:51:04 AM PDT by 2nd Bn, 11th Mar (The "p" in Democrat stands for patriotism.)
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To: SunkenCiv
Reminded me of this
"Coalbrookdale by Night", by Philip James de Loutherbourg, 1801

11 posted on 04/29/2012 5:53:18 AM PDT by moose07 (The truth will out, one day.)
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To: SunkenCiv

Interestin.

I wonder, would a tidally locked planet have moon? Being close enough to be tidally locked seems like it would screw with the orbit of a moon .


12 posted on 04/29/2012 5:54:09 AM PDT by cripplecreek (What does it profit a man if he gains the whole world but loses his soul?)
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To: samtheman
When I do habitable, I go with something a little less in flames.

Photobucket
13 posted on 04/29/2012 6:04:15 AM PDT by cripplecreek (What does it profit a man if he gains the whole world but loses his soul?)
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To: SunkenCiv
Government spending money imagining things again.

ML/NJ

14 posted on 04/29/2012 6:05:41 AM PDT by ml/nj
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To: greenhornet68; 2nd Bn, 11th Mar

LOL & a good possibility!


15 posted on 04/29/2012 6:25:05 AM PDT by PGalt
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To: moose07

Thanks for the attribution on that painting. For a moment I thought it was a Kinkade.


16 posted on 04/29/2012 6:32:15 AM PDT by Erasmus (BHO: New supreme leader of the homey rollin' empire.)
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To: blueunicorn6

ROFL!


17 posted on 04/29/2012 7:22:03 AM PDT by Ernest_at_the_Beach (The Global Warming HOAX is about Global Governance)
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To: SunkenCiv

“It’s another Tequila Sunrise.....”

The Eagles


18 posted on 04/29/2012 8:02:53 AM PDT by blueunicorn6 ("A crack shot and a good dancer")
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To: cripplecreek

Beautiful. What did you use?


19 posted on 04/29/2012 8:34:18 AM PDT by samtheman ( http://www.youtube.com/watch?v=CZ-4gnNz0vc)
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To: samtheman
Photoshop CS3. Making planets is kind of a morning ritual with me.

Photobucket
20 posted on 04/29/2012 8:44:37 AM PDT by cripplecreek (What does it profit a man if he gains the whole world but loses his soul?)
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To: cripplecreek

I just looked at your photobucket. Very cool.


21 posted on 04/29/2012 8:50:25 AM PDT by samtheman ( http://www.youtube.com/watch?v=CZ-4gnNz0vc)
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To: SunkenCiv

That planet is in or near the habitable zone of its star? Maybe they just don’t go above ground during the day...


22 posted on 04/29/2012 10:30:05 AM PDT by TheOldLady (FReepmail me to get ON or OFF the ZOT LIGHTNING ping list)
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To: cripplecreek

I also have Photoshop CS3 and would love some pointers.


23 posted on 04/29/2012 11:53:31 AM PDT by Army Air Corps (Four Fried Chickens and a Coke)
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To: KevinDavis

Ping.


24 posted on 04/29/2012 11:54:47 AM PDT by Army Air Corps (Four Fried Chickens and a Coke)
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To: Army Air Corps
I learn a lot from tutorials.

30+ Photoshop Tutorials for Creating Space and Planets

photoshop Mosaic

Planets are actually pretty easy, the toughest thing I've found to do is to create a halfway realistic starfield. Once I have one I never let it go. Here's a real basic starfield I made if you want to keep it and use it to build on.

starfield
25 posted on 04/29/2012 12:10:40 PM PDT by cripplecreek (What does it profit a man if he gains the whole world but loses his soul?)
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To: cripplecreek

Thanks! I do the same thing when I create an effect layer - I store it an reuse or tweak it.


26 posted on 04/29/2012 12:16:26 PM PDT by Army Air Corps (Four Fried Chickens and a Coke)
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To: SunkenCiv

27 posted on 04/29/2012 12:18:31 PM PDT by BIGLOOK
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To: SunkenCiv

That’s a proctoscope photo of my digestive tract after consuming Habaneros.


28 posted on 04/29/2012 12:43:43 PM PDT by Rebelbase
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To: Rebelbase

Did Doctor Rawls perform the procedure?

http://www.youtube.com/watch?v=QI1go72c5H8


29 posted on 04/29/2012 2:49:27 PM PDT by greenhornet68
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To: shibumi; PGalt; moose07; cripplecreek; Erasmus; Army Air Corps

Thanks!


30 posted on 04/29/2012 4:21:52 PM PDT by SunkenCiv (FReepathon 2Q time -- https://secure.freerepublic.com/donate/)
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To: samtheman; blueunicorn6; greenhornet68; 2nd Bn, 11th Mar; ml/nj; Erasmus; Ernest_at_the_Beach; ...

LOL


31 posted on 04/29/2012 4:21:52 PM PDT by SunkenCiv (FReepathon 2Q time -- https://secure.freerepublic.com/donate/)
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To: BIGLOOK

Whoops, thanks BIGLOOK.


32 posted on 04/29/2012 4:23:28 PM PDT by SunkenCiv (FReepathon 2Q time -- https://secure.freerepublic.com/donate/)
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